JP3523622B2 - Manufacturing method of golf club head - Google Patents

Manufacturing method of golf club head

Info

Publication number
JP3523622B2
JP3523622B2 JP2001261989A JP2001261989A JP3523622B2 JP 3523622 B2 JP3523622 B2 JP 3523622B2 JP 2001261989 A JP2001261989 A JP 2001261989A JP 2001261989 A JP2001261989 A JP 2001261989A JP 3523622 B2 JP3523622 B2 JP 3523622B2
Authority
JP
Japan
Prior art keywords
model
head
manufacturing
golf club
mold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2001261989A
Other languages
Japanese (ja)
Other versions
JP2003070939A (en
Inventor
賢 甲野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Rubber Industries Ltd
Original Assignee
Sumitomo Rubber Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Rubber Industries Ltd filed Critical Sumitomo Rubber Industries Ltd
Priority to JP2001261989A priority Critical patent/JP3523622B2/en
Priority to US10/222,920 priority patent/US6789304B2/en
Publication of JP2003070939A publication Critical patent/JP2003070939A/en
Application granted granted Critical
Publication of JP3523622B2 publication Critical patent/JP3523622B2/en
Priority to US10/899,174 priority patent/US6997818B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/02—Joint structures between the head and the shaft
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B53/0416—Heads having an impact surface provided by a face insert
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B53/0466—Heads wood-type
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/02—Ballast means for adjusting the centre of mass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/02—Lost patterns
    • B22C7/023—Patterns made from expanded plastic materials
    • B22C7/026—Patterns made from expanded plastic materials by assembling preformed parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/04—Use of lost patterns
    • B22C9/046—Use of patterns which are eliminated by the liquid metal in the mould
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B53/0408—Heads characterised by specific dimensions, e.g. thickness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49988—Metal casting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49993—Filling of opening

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Golf Clubs (AREA)

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、設計自由度を高め
うるゴルフクラブヘッドの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a golf club head which can increase the degree of freedom in design.

【０００２】[0002]

【従来の技術】金属製のゴルフクラブヘッドの製造方法
は、鋳造を主体としたもの、又は鍛造またはプレスフォ
ーミングなどの塑性加工を主体としたものに大別され
る。鋳造の場合、ヘッドを概ね２つのヘッド用部材に分
割（例えば図４）し、それぞれの部材の消失模型を作成
する。消失模型は、ワックスモデルとも呼ばれ、前記部
材形状のキャビティを有する射出成形装置にワックスを
射出して成形したものである。固化した消失模型は、射
出成形装置から取り出され、その表面には鋳型の原料と
なるスラリー状の耐火性材料を塗布した後、粗めの砂粒
（スタッコ）が付着される。そして、スラリー等を乾
燥、固化させるとともに、加熱して内部の消失模型を外
部に溶出（脱ろう）させる。これにより内部に消失模型
が占めていたキャビティを有する鋳型を製造しうる。そ
して、この該鋳型の中に溶融金属を流し込んで固化させ
た後、ショットブラスト、ハンマー等により鋳型を粉砕
することにより、ヘッド用部材が得られる。またヘッド
用部材を互いに接合することでヘッドが得られる。2. Description of the Related Art A method for manufacturing a golf club head made of metal is roughly classified into a method mainly based on casting or a method mainly based on plastic working such as forging or press forming. In the case of casting, the head is roughly divided into two head members (for example, FIG. 4), and a disappearance model of each member is created. The disappearance model is also called a wax model, and is formed by injecting wax into an injection molding device having a cavity having the above-mentioned member shape. The solidified disappearance model is taken out from the injection molding device, and a slurry refractory material as a raw material for the mold is applied to the surface thereof, and then rough sand grains (stucco) are attached thereto. Then, the slurry or the like is dried and solidified, and heated to elute (dewax) the disappeared model inside to the outside. This makes it possible to manufacture a mold having a cavity occupied by the vanishing model. Then, a molten metal is poured into the mold to solidify it, and then the mold is crushed by a shot blast, a hammer or the like to obtain a head member. Further, the head is obtained by joining the head members to each other.

【０００３】他方、鍛造、プレスフォーミングなどの塑
性加工の場合、ヘッドを概ね３つ以上の部材に分割し、
夫々を金属板材等を鍛造、プレスフォーミングして所望
の部材形状に仕上げ、これらの各部材を溶接等により接
合してヘッドを製造する。なお２以上の部材のうち、一
部を鋳造で成形し、残りの部材に鍛造、プレスフォーミ
ング製品などを用いることもある。On the other hand, in the case of plastic working such as forging and press forming, the head is divided into three or more members,
A metal plate material or the like is forged and press formed into a desired member shape, and these members are joined by welding or the like to manufacture a head. In addition, a part of the two or more members may be molded by casting, and the remaining members may be forged or press-formed products.

【０００４】[0004]

【発明が解決しようとする課題】鍛造やプレスフォーミ
ングでは、部材の形状が複雑化すると加工困難となるた
め、鋳造に比べるとヘッドを構成する部材数が多くな
り、ひいては各部材を接合するための溶接箇所も多くな
る。接合箇所が多くなると、生産性が低下するほか、ヘ
ッドにとって非常に重要なロフト角、ライ角、フック角
といった角度やヘッド形状そのものにバラツキが生じや
すい。In forging and press forming, if the shape of the members becomes complicated, it becomes difficult to process. Therefore, the number of members constituting the head is larger than that in casting, and therefore, it is necessary to join the respective members. There are also many welding points. If the number of joints increases, the productivity decreases, and the head shape itself, such as the loft angle, lie angle, and hook angle, which are very important for the head, tends to vary.

【０００５】一方、鋳造の場合には、使用できる材料が
制限されるものの、鍛造、プレスフォーミングなどに比
べると複雑な形状を一体に成形でき、接合箇所を少なく
でき、上記バラツキなどを防止できる。図１２には、一
般的な消失模型ｍを示す。この例の消失模型ｍは、フェ
ース部材模型ｍ１と、ヘッド本体模型ｍ２とから構成さ
れている。ヘッド本体模型ｍ２は、クラウン側の壁部ｍ
２ａ、ソール側の壁部ｍ２ｂ、及び前記クラウン側の壁
部ｍ２ａとソール側の壁部ｍ２ｂとの間を継いでヒール
側からトウ側に至るサイド側の壁部ｍ２ｃからなる殻基
体ｍｅに、該殻基体内部に突出するシャフト差込用の筒
部ｍ２ｄを一体に形成している。On the other hand, in the case of casting, although the usable materials are limited, a complicated shape can be integrally formed as compared with forging, press forming, etc., the number of joints can be reduced, and the above variations can be prevented. FIG. 12 shows a general disappearance model m. The disappearance model m in this example includes a face member model m1 and a head body model m2. The head body model m2 is a wall m on the crown side.
2a, a wall m2b on the sole side, and a shell base me composed of a wall m2c on the side extending from the heel side to the toe side by connecting between the wall m2a on the crown side and the wall m2b on the sole side, A cylindrical portion m2d for inserting the shaft, which projects into the shell base, is integrally formed.

【０００６】またこのヘッド本体模型ｍ２を成形する射
出成形装置は、例えば図１３に示すように、上型ａ１と
下型ａ２とからなる金型ａと、該金型ａに位置決め配置
されかつ前記ヘッド基体模型ｍ２の内面部分を成形する
組立中子ｂとからなる。組立中子ｂは、中子片ｂ１ない
しｂ７を所定の順番で組み立てることにより、金型ａ内
に配置できかつ所定の順序で脱型しうる。An injection molding apparatus for molding the head main body model m2 is, for example, as shown in FIG. 13, a mold a composed of an upper mold a1 and a lower mold a2, and is positioned and arranged in the mold a. And an assembly core b for molding the inner surface portion of the head base model m2. The assembled core b can be placed in the mold a and can be demolded in a predetermined order by assembling the core pieces b1 to b7 in a predetermined order.

【０００７】従来のヘッド本体模型ｍ２は、筒部ｍ２ｄ
がその長さ方向に亘って殻基体ｍｅの内面と連結されて
いる。これは図１４に示すように、ワックスを射出後、
中子片ｂ１、ｂ５、ｂ２を１〜３の順で脱型可能とする
ためである。ヘッド本体模型ｍ２において、筒部ｍ２ｄ
を殻基体ｍｅから離間させると、図１５のように、中子
片ｂ５が脱型し得ない。つまり、従来のヘッドでは消失
模型の製造に際しての制約のため、筒部ｍ２ｄと殻基体
ｍｅとの間には、これらを連結するための連結部を必要
とする。このように、従来のヘッドは、前記連結部の重
量分が無駄に使用されており、その分、ヘッド体積や重
心位置などが制約を受け設計自由度を損ねていた。The conventional head body model m2 has a cylindrical portion m2d.
Are connected to the inner surface of the shell base me over the length thereof. As shown in FIG. 14, after the wax is injected,
This is because the core pieces b1, b5, b2 can be demolded in the order of 1 to 3. In the head body model m2, the cylindrical portion m2d
Is separated from the shell base me, the core piece b5 cannot be removed from the mold as shown in FIG. In other words, the conventional head requires a connecting portion for connecting the cylindrical portion m2d and the shell base body me, due to restrictions in manufacturing the vanishing model. As described above, in the conventional head, the weight of the connecting portion is wasted, and the volume of the head, the position of the center of gravity, and the like are restricted, and the degree of freedom in design is impaired.

【０００８】本発明は、消失模型を製造する工程におい
て、消失模型を、第１の型により製造された第１の消失
模型と、この第１の消失模型とは別の第２の型により製
造された第２の消失模型とを固着する工程を含んで製造
することを基本として、複雑な消失模型でも容易に成形
でき、例えば殻基体の内面から筒部を離してヘッドの製
造に役立つゴルフクラブヘッドの製造方法を提供するこ
とを目的としている。 According to the present invention , in the process of producing the vanishing model, the vanishing model is produced by the first vanishing model produced by the first mold and the second die different from the first vanishing model. Based on the manufacturing process including the step of fixing the formed second disappearance model, a complicated disappearance model can be easily formed, for example, a golf club useful for manufacturing a head by separating the tubular portion from the inner surface of the shell substrate. An object is to provide a method for manufacturing a head.

【０００９】[0009]

【課題を解決するための手段】本発明のうち請求項１記
載の発明は、ゴルフクラブヘッドを構成する少なくとも
一つのヘッド用部材を鋳造により製造するゴルフクラブ
ヘッドの製造方法であって、前記ヘッド用部材と同形状
の消失模型を製造する消失模型製造工程と、この消失模
型から鋳型を製造して前記ヘッド用部材を鋳造する鋳造
工程とを含むとともに、前記消失模型製造工程は、前記
消失模型が、第１の型により製造された第１の消失模型
と、この第１の消失模型とは別の第２の型により製造さ
れた第２の消失模型とを固着する工程を含み、前記第１
の消失模型が、孔部を有する殻基体模型であり、前記第
２の消失模型が、前記殻基体模型の前記孔部に接続され
殻基体模型の内部を殻基体模型の内面と離れてのびる筒
部模型であり、前記鋳造工程は、鋳型の製造に際して、
前記殻基体模型の前記孔部と前記筒部模型とに、円柱状
かつ両模型の位置ずれ防止用の鋳型材を挿入して固定す
ることを特徴とする。According to a first aspect of the present invention, there is provided a method for manufacturing a golf club head, comprising manufacturing at least one head member constituting a golf club head by casting. A vanishing model manufacturing process for manufacturing a vanishing model having the same shape as the member for casting, and a casting process for manufacturing a mold from the vanishing model to cast the head member, wherein the vanishing model manufacturing process is the vanishing model. Includes a step of fixing a first vanishing model manufactured by the first mold and a second vanishing model manufactured by a second mold different from the first vanishing model, 1
The disappearance model of is a shell substrate model having holes, and
2 vanishing models are connected to the holes of the shell substrate model.
A cylinder that extends inside the shell base model away from the inner surface of the shell base model
Part model, the casting step, in the manufacture of the mold,
A cylindrical shape is formed in the hole portion and the cylindrical portion model of the shell substrate model.
And insert and fix the mold material to prevent the displacement of both models.
Characterized in that that.

【００１０】又請求項２に係る発明は、前記第１の消失
模型が、ヒール寄りに孔部を有するクラウン側の壁部、
ソール側の壁部、及び前記クラウン側の壁部と前記ソー
ル側の壁部との間を継いでヒール側からトウ側に至るサ
イド側の壁部からなる殻基体模型であることを特徴とす
る。[0010] The invention according to claim 2, before Symbol first loss
The model has a wall on the crown side having a hole near the heel,
Sole side wall, and the crown side wall and the saw
The wall from the heel side to the heel side to the toe side
It is characterized in that it is a shell substrate model composed of a wall on the id side .

【００１１】さらに請求項３に係る発明は、前記第２の
消失模型が、前記殻基体模型の前記孔部に接続されかつ
シャフト差込用の筒部模型であることを特徴とする。Further, the invention according to claim 3 is the second aspect.
A vanishing model is connected to the hole in the shell substrate model and
It is characterized in that it is a cylinder model for inserting a shaft .

【００１２】[0012]

【発明の実施の形態】以下本発明の実施の一形態を図面
に基づき説明する。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

【００１３】図１〜５は、本発明のゴルフクラブヘッド
の製造方法（以下単に製造方法ということがある）によ
り製造されうるゴルフクラブヘッド（以下単にゴルフク
ラブヘッドということがある）を示し、その図１は正面
図、図２は同平面図、図３は図２のＡ−Ａ線端面図、図
４はヘッドの分解斜視図、図５は図１のＢ−Ｂ線端面図
をそれぞれ示す。図において、本実施形態のゴルフクラ
ブヘッド（以下、単に「ヘッド」ということがある。）
１は、ボールを打球する面であるフェース面Ｆを外表面
として具えるフェース部２と、前記フェース面Ｆの上縁
に連なりヘッド上面をなすクラウン部３と、前記フェー
ス面Ｆの下縁に連なりヘッド底面をなすソール部４と、
前記クラウン部３とソール部４との間を継ぎ前記フェー
ス面Ｆのトウ側縁ｔからバックフェースＢを通り前記フ
ェース面Ｆのヒール側縁ｈへとのびるサイド部５と、フ
ェース部２とクラウン部３とサイド部４とが交わるヒー
ル側の交わり部の近傍に配されかつ図示しないシャフト
の一端が装着されるネック部６とを具えたウッド型のも
のが示されている。1 to 5 show the golf club head of the present invention .
According to the manufacturing method (hereinafter sometimes simply referred to as the manufacturing method)
Golf club head that can be manufactured by
Indicates sometimes referred Love head), that figure 1 is a front view, FIG. 2 is the plan view, FIG. 3 along line A-A end view of FIG. 2, FIG. 4 is an exploded perspective view of the head, FIG. 5 FIG. 1 shows the BB line end view of FIG. In the figure, the golf club head of the present embodiment (hereinafter, may be simply referred to as "head").
Reference numeral 1 denotes a face portion 2 having a face surface F, which is a surface for hitting a ball, as an outer surface, a crown portion 3 continuous with an upper edge of the face surface F to form a head upper surface, and a lower edge of the face surface F. The sole portion 4 forming the bottom of the continuous head,
The side portion 5 that connects the crown portion 3 and the sole portion 4 and extends from the toe side edge t of the face surface F to the heel side edge h of the face surface F through the back face B, the face portion 2 and the crown. There is shown a wood type having a neck portion 6 which is arranged in the vicinity of the heel side intersection where the portion 3 and the side portion 4 intersect and to which one end of a shaft (not shown) is mounted.

【００１４】また前記ヘッド１は、図４に示す如く、フ
ェース部２を有したフェース部材１ａと、このフェース
部材１ａを前面に固着することにより内部に中空部ｉを
形成しうるヘッド本体１ｂとから構成され、本例ではヘ
ッド１がこの２つの部品を溶接により接合してなる所謂
２ピースタイプ構造のものを例示する。As shown in FIG. 4, the head 1 includes a face member 1a having a face portion 2 and a head body 1b capable of forming a hollow portion i inside by fixing the face member 1a to the front surface. In this example, the head 1 has a so-called two-piece type structure in which the two parts are joined by welding.

【００１５】前記フェース部材１ａは、本例ではフェー
ス部２の周囲にバックフェースＢ側へ小巾でのびる延長
部６を有する略お椀状のものが例示される。前記延長部
６は、例えばクラウン部３側へ小巾で張り出すクラウン
側の延長部６ａ、ソール部４側へ小巾で張り出すソール
側の延長部６ｂ、サイド部５のトウ側へ小巾で張り出す
トウ側の延長部６ｃ、又はサイド部５のヒール側へ小巾
で張り出すヒール側の延長部６ｄの１以上を含むのが望
ましい。このような延長部６は、フェース部材１ａとヘ
ッド本体１ｂとの溶接部ｊ（図２に鎖線で示す）をフェ
ース面Ｆの周縁からバックフェース側に遠ざけ、この部
分への打球時の衝撃力を緩和しヘッド耐久性を向上する
ほか、フェース面Ｆの周縁で溶接する場合に比してその
作業性を向上できる点で好ましいものとなる。なお延長
部６の幅は、例えば５〜３５mm程度とするのが望まし
い。５mm未満では上記効果が得られ難く、逆に３５mmを
超えるとフェース部２と延長部６とをプレスフォーミン
グ等の塑性加工により一体に形成するのが困難となる。
なおフェース部材１ａにおいて延長部６を省略しても良
いのでは言うまでもない。In the present embodiment, the face member 1a is exemplified by a substantially bowl-shaped member having an extension portion 6 extending around the face portion 2 toward the back face B side with a small width. The extension portion 6 is, for example, a crown-side extension portion 6a that juts out to the crown portion 3 side with a small width, a sole-side extension portion 6b that juts out to the sole portion 4 side with a small width, and a small width to the toe side of the side portion 5. It is desirable to include one or more of the toe side extension 6c that overhangs with, or the heel side extension 6d that overhangs to the heel side of the side portion 5 with a small width. Such an extension portion 6 moves a welded portion j (shown by a chain line in FIG. 2) between the face member 1a and the head main body 1b away from the peripheral edge of the face surface F toward the back face side, and the impact force at the time of hitting this portion. Is preferable, and the workability can be improved as compared with the case where welding is performed at the peripheral edge of the face surface F in order to alleviate the problem. The width of the extension 6 is preferably about 5 to 35 mm, for example. If it is less than 5 mm, it is difficult to obtain the above effect, and if it exceeds 35 mm, it becomes difficult to integrally form the face portion 2 and the extension portion 6 by plastic working such as press forming.
Needless to say, the extension 6 may be omitted in the face member 1a.

【００１６】フェース部材１ａを構成する材料は特に限
定されず、例えばアルミニウム合金、チタン合金、ステ
ンレスなどの各種の金属材料により形成することができ
る。好ましくは、冷間での鍛造やプレスフォーミングに
よる成形を可能とすることにより安価に製造できかつ強
度に優れるβ型チタン合金などが好ましい。β型チタン
合金としては、例えばＴｉ−１５Ｖ−３Ｃｒ−３Ａｌ−
３Ｓｎ、Ｔｉ−２２Ｖ−４Ａｌ、Ｔｉ−１５Ｍｏ−５Ｚ
ｒ−３Ａｌ、Ｔｉ−１０Ｖ−２Ｆｅ−３Ａｌ、Ｔｉ−１
３Ｖ−１１Ｃｒ−３Ａｌ、Ｔｉ−８Ｍｏ−８Ｖ−２Ｆｅ
−３Ａｌ、Ｔｉ−３Ａｌ−８Ｖ−６Ｃｕ−４Ｍｏ−４Ｚ
ｒ、Ｔｉ−１１．５Ｍｏ−６Ｚｒ−４．５Ｓｎ、又はＴ
ｉ−１５Ｍｏ−５Ｚｒ等が挙げられる。The material forming the face member 1a is not particularly limited, and may be formed of various metal materials such as aluminum alloy, titanium alloy, and stainless steel. It is preferable to use a β-type titanium alloy or the like that can be manufactured at low cost and has excellent strength by enabling cold forging and forming by press forming. As the β-type titanium alloy, for example, Ti-15V-3Cr-3Al-
3Sn, Ti-22V-4Al, Ti-15Mo-5Z
r-3Al, Ti-10V-2Fe-3Al, Ti-1
3V-11Cr-3Al, Ti-8Mo-8V-2Fe
-3Al, Ti-3Al-8V-6Cu-4Mo-4Z
r, Ti-11.5Mo-6Zr-4.5Sn, or T
i-15Mo-5Zr etc. are mentioned.

【００１７】前記ヘッド本体１ｂは、その前面に前記フ
ェース部材１ａが配される開口部Ｏを有し、この開口部
Ｏの周縁にフェース部材１ａを合わせて溶接一体化され
る。ヘッド本体１ｂは、クラウン側の壁部７、ソール側
の壁部９、及び前記クラウン側の壁部７とソール側の壁
部９との間を継いでヒール側からトウ側に至るサイド側
の壁部１０からなる殻基体１１に、該殻基体１１の内部
に突出するシャフト差込用の筒部１２を鋳造により一体
成形している。前記クラウン側の壁部７にはフェース部
材１ａのクラウン側の延長部６ａが、前記ソール側の壁
部９にはフェース部材１ａのソール側の延長部６ｂが、
前記サイド側の壁部１０には前記フェース部材１ａのト
ウ側の延長部６ｃ、ヒール側の延長部６ｄがそれぞれ位
置合わせされかつ溶接により一体化される。The head body 1b has an opening O on the front surface thereof in which the face member 1a is arranged, and the face member 1a is aligned with the peripheral edge of the opening O and welded together. The head body 1b connects the crown side wall portion 7, the sole side wall portion 9, and the side portion from the heel side to the toe side by connecting between the crown side wall portion 7 and the sole side wall portion 9. A shell base 11 formed of a wall 10 is integrally formed with a cylindrical portion 12 for inserting a shaft, which projects into the shell base 11 by casting. The crown side wall 7 has a crown side extension 6a of the face member 1a, and the sole side wall 9 has a sole side extension 6b of the face member 1a.
An extension 6c on the toe side and an extension 6d on the heel side of the face member 1a are aligned with the side wall 10 and integrated by welding.

【００１８】そして本実施形態のヘッド本体１ｂは、図
３に示すように、前記シャフト差込用の筒部１２を、前
記殻基体１１の内面１１ａから離してこの殻基体１２に
一体成形することを特徴事項の一つとしている。従来の
鋳造により製造されたヘッド本体１ｂは、図１３、図１
６に示したように、鋳造上の理由から、シャフト差込用
の筒部とヘッド本体の内面とが筒部の長さ方向に亘って
連続して一体化され、この部分に余分な重量が配されて
いた。In the head body 1b of this embodiment, as shown in FIG. 3, the shaft inserting cylinder portion 12 is formed integrally with the shell base body 12 apart from the inner surface 11a of the shell base body 11. Is one of the features. The head body 1b manufactured by the conventional casting is shown in FIGS.
As shown in FIG. 6, for the reason of casting, the shaft inserting cylinder portion and the inner surface of the head body are continuously integrated along the length direction of the cylinder portion, and extra weight is added to this portion. It was distributed.

【００１９】これに対して、本実施形態のヘッド本体１
ｂでは、シャフト差込用の筒部１２を、該殻基体１１の
内面１１ａから離した離間部１４を設けて殻基体１１に
一体成形することによって、余分な重量をヒール側から
排除でき、ヘッドの重量設計の自由度を高めうる。また
ヘッド本体１ｂは、鋳造により殻基体１１にシャフト差
込用の筒部１２を一体成形しているため、溶接等により
その都度接合するものに比してライ角などのヘッド諸角
度のバラツキが防止でき、寸法安定性に優れるヘッドを
製造するのに役立つ。またこのようなヘッド基体１ｂな
いしヘッド１では、筒部１２と殻基体１１との連結部分
が少ないため、鋳型から取り出したアズキャスト状態
で、殻基体１１に対する筒部１２の角度を微調節するこ
とが比較的容易に行え、ライ角などを個別に変化させる
ことも可能となる。On the other hand, the head body 1 of this embodiment
In b, the shaft insertion tube portion 12 is integrally formed with the shell base body 11 by providing the spacing portion 14 separated from the inner surface 11a of the shell base body 11, whereby excess weight can be eliminated from the heel side, and the head can be removed. The degree of freedom in weight design can be increased. Further, in the head body 1b, since the cylindrical portion 12 for inserting the shaft is integrally formed with the shell base body 11 by casting, variations in various head angles such as a lie angle are larger than those of the head body 1b which is joined each time by welding or the like. This is useful for manufacturing a head that can be prevented and has excellent dimensional stability. Further, in such a head base 1b or head 1, since the connecting portion between the cylindrical portion 12 and the shell base 11 is small, the angle of the cylindrical portion 12 with respect to the shell base 11 should be finely adjusted in the as cast state taken out from the mold. Can be performed relatively easily, and the lie angle and the like can be individually changed.

【００２０】本例の筒部１２は、具体的にはサイド側の
壁部１０の内面とは実質的に接することなく、ネック部
６の内面に一体成形されている。これにより、図３に示
すように、離間部１４の長さＬ１を大きく確保でき、従
来の無駄な重量をより多く削減することができる。削減
し得た重量は、例えばヘッド体積を大型化するために、
或いはヘッド重心を低くするためなどに用いることがで
きるため、ヘッドの設計自由度をより高め得る。Specifically, the tubular portion 12 of this example is integrally formed with the inner surface of the neck portion 6 without substantially contacting the inner surface of the side wall portion 10. As a result, as shown in FIG. 3, a large length L1 of the separating portion 14 can be secured, and the conventional useless weight can be further reduced. The weight that can be reduced is, for example, to increase the head volume.
Alternatively, since it can be used for lowering the center of gravity of the head, the degree of freedom in designing the head can be further increased.

【００２１】このようなヘッド本体２ｂは、鋳造可能な
材料であれば、特に限定はされないが、例えばアルミニ
ウム合金、チタン合金、ステンレスなどの金属材料が好
適である。本例ではＴｉ−６Ａｌ−４Ｖのチタン合金が
採用され、例えばセラミックスシェルモールドを用いた
ロストワックス精密鋳造法によって一体成形される。The head body 2b is not particularly limited as long as it is a castable material, but a metal material such as an aluminum alloy, a titanium alloy or stainless steel is preferable. In this example, a titanium alloy of Ti-6Al-4V is adopted and integrally molded by, for example, a lost wax precision casting method using a ceramic shell mold.

【００２２】図６には、ゴルフクラブヘッドの他の例を
示し、本例のヘッド本体１ｂは、前記シャフト差込用の
筒部１２を、少なくとも一部に前記離間部１４を残して
該殻基体１１の内面１１ａと連結片１４により連結して
鋳造により一体成形されたものを示す。このようなヘッ
ド本体１ｂは、図３に示した態様に比べると離間部１４
の長さＬ１が小となるため、ヘッドの設計の自由度を高
める効果はやや劣るが、連結片１３によって筒部１２と
殻基体１１とがより強固に結合されるため、ヘッドの耐
久性を向上できる。FIG. 6 shows another example of a golf club head. The head main body 1b of this example has a cylindrical portion 12 for inserting the shaft, and the separation portion 14 in at least a part of the shell portion 12 to leave the shell. It shows the one integrally formed by casting by connecting the inner surface 11a of the base 11 with the connecting piece 14. Such head body 1b includes a spacing portion 14 compared to the embodiment shown in FIG. 3
Since the length L1 of the head is small, the effect of increasing the degree of freedom in the design of the head is slightly inferior, but since the tubular portion 12 and the shell base body 11 are more firmly joined by the connecting piece 13, the durability of the head is improved. Can be improved.

【００２３】図３、図６に示した、前記殻基体１１の内
面１１ａと筒部１２とが離間する離間部１４の軸方向の
長さＬ１は、特に限定はされないが、好ましくは５〜４
０mm、より好ましくは２０〜３８mm、さらに好ましくは
３０〜３５mmとするのが望ましい。前記離間部１４の長
さＬ１が５mm未満になると、ヒール側での無駄な重量を
削減する効果が小さくなる傾向がある。逆に前記長さＬ
１が大きくなると、耐久性をより高めるというメリット
が得られ難くなるおそれがある。The axial length L1 of the separating portion 14 shown in FIGS. 3 and 6 for separating the inner surface 11a of the shell substrate 11 from the cylindrical portion 12 is not particularly limited, but is preferably 5 to 4.
The thickness is preferably 0 mm, more preferably 20 to 38 mm, further preferably 30 to 35 mm. If the length L1 of the spacing portion 14 is less than 5 mm, the effect of reducing unnecessary weight on the heel side tends to be reduced. On the contrary, the length L
When 1 is large, it may be difficult to obtain the advantage of further increasing durability.

【００２４】また連結片１３を有する場合、その筒部１
２に沿った長さＬ２は、例えば５〜３０mm、より好まし
くは７〜２０mm、さらに好ましくは１０〜１５mmに設定
するのが望ましい。連結片１３の長さＬ２が大きすぎる
と、上述のヘッドの設計自由度を高める効果が低下し、
逆に小さすぎてもこの形態における耐久性の向上という
メリットが得られ難くなるおそれがある。When the connecting piece 13 is provided, the tubular portion 1 thereof
It is desirable that the length L2 along 2 is set to, for example, 5 to 30 mm, more preferably 7 to 20 mm, and further preferably 10 to 15 mm. If the length L2 of the connecting piece 13 is too large, the effect of increasing the degree of freedom in designing the head described above decreases,
On the other hand, if it is too small, it may be difficult to obtain the advantage of improving the durability in this form.

【００２５】また連結片１３を有する場合、図７に示す
その厚さＷは、例えば１〜５mm、より好ましくは１．５
〜４．０mm、さらに好ましくは２．５〜３．０mmとする
のが望ましい。前記厚さＷが５mmを超えると、この連結
片１３での重量が大となってヘッドの設計自由度が低下
する傾向があり、逆に小さすぎても強度を高める効果が
得られない傾向がある。When the connecting piece 13 is provided, its thickness W shown in FIG. 7 is, for example, 1 to 5 mm, more preferably 1.5.
It is desirable to set the thickness to 4.0 mm, more preferably 2.5 to 3.0 mm. If the thickness W exceeds 5 mm, the weight of the connecting piece 13 tends to be large, and the degree of freedom in designing the head tends to decrease. Conversely, if the thickness W is too small, the effect of increasing strength tends not to be obtained. is there.

【００２６】このようなヘッド本体１ｂは、本発明に係
るゴルフクラブヘッドの製造方法、即ちヘッド本体１ｂ
（ヘッド用部材）と同形状の消失模型Ｍを製造し（消失
模型製造工程）、この消失模型Ｍから鋳型を製造して該
ヘッド本体１ｂを鋳造する（鋳造工程）ことにより製造
でき、図８に示すように、消失模型Ｍを製造する際に
は、該消失模型Ｍを、第１の型により製造された第１の
消失模型Ｍ１と、この第１の消失模型Ｍ１とは別の第２
の型により製造された第２の消失模型Ｍ２とを固着する
工程を含んで製造する。 Such a head body 1b is related to the present invention.
Golf club head manufacturing method, that is, head body 1b
The disappearance model M having the same shape as the (head member) is manufactured (disappearance
(Model manufacturing process), a mold is manufactured from the lost model M, and
Manufactured by casting the head body 1b (casting process)
As shown in FIG. 8, when manufacturing the vanishing model M, the vanishing model M is divided into the first vanishing model M1 produced by the first mold and the first vanishing model M1. Another second
And a second vanishing model M2 manufactured by the mold of FIG.

【００２７】なお実施形態では、前記第１の消失模型Ｍ
１が、前記ヘッド本体１ｂの殻基体１１に相当する殻基
体模型１５であり、かつ前記第２の消失模型Ｍ２が、ヘ
ッド本体１ｂのシャフト差込用の筒部１２に相当する筒
部模型１６からなるものを例示している。In the embodiment, the first vanishing model M
Reference numeral 1 denotes a shell base model 15 corresponding to the shell base 11 of the head body 1b, and the second vanishing model M2 corresponds to a cylindrical portion model 16 corresponding to the shaft insertion cylindrical portion 12 of the head main body 1b. Exemplifies those consisting of.

【００２８】殻基体模型１５は、クラウン側の壁部Ｍ１
ａ、ソール側の壁部Ｍ１ｂ、及び前記クラウン側の壁部
Ｍ１ａと前記ソール側の壁部Ｍ１ｂとの間を継いでヒー
ル側からトウ側に至るサイド側の壁部Ｍ１ｃを有し、ク
ラウン側の壁部Ｍ１ａのヒール寄りに孔部Ｈを有したネ
ック部Ｍ１ｄを有している。図９（ａ）に示すように、
殻基体模型１５の内部にはシャフト差込用の筒部が形成
されていないため、従来の一般的な方法に従う射出成形
装置（第１の型）により容易に成形することができる。
また前記筒部模型１６は、本例では内部に孔部１６ａを
有する円筒状をなし、図示しない第２の型を用いて射出
成形される。The shell substrate model 15 includes a wall M1 on the crown side.
a, a sole side wall portion M1b, and a side wall portion M1c extending from the heel side to the toe side by connecting between the crown side wall portion M1a and the sole side wall portion M1b. Has a neck portion M1d having a hole H near the heel of the wall portion M1a. As shown in FIG. 9 (a),
Since the cylindrical portion for inserting the shaft is not formed inside the shell base model 15, it can be easily molded by an injection molding apparatus (first mold) according to a conventional general method.
Further, in the present example, the tubular model 16 has a cylindrical shape having a hole portion 16a therein, and is injection-molded using a second mold (not shown).

【００２９】図９（ｂ）に示す如く、前記筒部模型１６
は、その上端面を殻基体模型１５の内面に固着される。
このとき、図１０に拡大して示すように、筒部模型１６
の上端部を係止し前記ネック部Ｍ１ｄの孔部Ｈと筒部模
型１６の孔部１６ａとの軸中心線を整一させる係合部１
９を設けておくことにより、殻基体模型１５と筒部模型
１６とを精度良く位置合わせして固着するのに役立つ。
係合部１９は、ソケット状など種々の形状で実施でき
る。また、殻基体模型１５と筒部模型１６との固着に
は、例えば接着剤を用いたり、あるいは両部材の固着部
をハンダごて等にて局部的に加熱し溶着一体化すること
もできる。これにより、筒部模型１６は、殻基体模型１
５の前記孔部Ｈに接続されかつ殻基体模型１５の内部か
ら離れた離間部１４を有して殻基体模型１５の内面へと
のびる。As shown in FIG. 9B, the tubular model 16
Has its upper end surface fixed to the inner surface of the shell substrate model 15.
At this time, as shown in the enlarged view of FIG.
An engaging portion 1 that locks the upper end of the hole M1d to align the axial center lines of the hole H of the neck M1d and the hole 16a of the tubular model 16
The provision of 9 is useful for accurately aligning and fixing the shell base model 15 and the tubular model 16.
The engagement portion 19 can be implemented in various shapes such as a socket shape. Further, for example, an adhesive may be used to fix the shell base model 15 and the cylindrical part model 16, or the fixed parts of both members may be locally heated by a soldering iron or the like to be fused and integrated. As a result, the cylindrical portion model 16 becomes the shell base model 1
5 has a space 14 connected to the hole H of the shell 5 and separated from the inside of the shell base model 15 and extends to the inner surface of the shell base model 15.

【００３０】次に、このような消失模型Ｍから鋳型Ｙを
製造する。鋳型Ｙの製造に際して、図９（ｃ）に示す如
く、前記殻基体模型１５と前記筒部模型１６とに、円柱
状の鋳型材２０を挿入し両部材の位置ずれなどを防止す
ることが望ましい。そして図１１のように、殻基体模型
１５と筒部模型１６とを固着して形成された消失模型Ｍ
の表面に、鋳型原料となるスラリー状の耐火性材料、砂
粒を付着させかつ常法に従い固化させるとともに、内部
の消失模型Ｍを外部に溶出（脱ろう）させ鋳型を製造し
うる。なお図１１には、溶融した消失模型Ｍを排出し後
に湯口となる部分を図示省略している。Next, a mold Y is manufactured from such disappearance model M. Hand in the production of the mold Y, as shown in FIG. 9 (c), the in the shell base model 15 and the tubular portion model 16, is possible to insert a cylindrical mold member 20 to prevent a positional deviation of both members desirable. Then, as shown in FIG. 11, the disappearance model M formed by fixing the shell base model 15 and the tubular model 16 to each other.
It is possible to manufacture a mold by adhering a slurry-like refractory material, which is a raw material for the mold, and sand particles onto the surface of, and solidifying it by a conventional method, and eluting (dewaxing) the disappearance model M inside. Note that, in FIG. 11, a portion which becomes a sprue after the melted disappeared model M is discharged is not shown.

【００３１】次に、この鋳型Ｙの中に溶融金属を流し込
んで固化させた後、ショットブラスト、ハンマー等によ
り鋳型を粉砕することにより、図３或いは図６のように
離間部１４を有するヘッド本体１ｂを鋳造できる。なお
フェース部材１ａは、鋳造のみならず、プレスフォーミ
ング等で形成しうるのは言うまでもない。また上記各実
施例では、筒部１１の下端がソール側の壁部９から離間
するものを示すが接しているものでも良い。Next, a molten metal is poured into the mold Y to solidify it, and the mold is crushed by a shot blast, a hammer or the like, so that the head main body having the separating portion 14 as shown in FIG. 3 or FIG. 1b can be cast. It goes without saying that the face member 1a can be formed not only by casting but also by press forming or the like. In each of the above-described embodiments, the lower end of the tubular portion 11 is shown as being separated from the sole-side wall portion 9, but may be in contact therewith.

【００３２】[0032]

【実施例】目標値として、ヘッド質量１８５ｇ、ヘッド
体積３６０cm3 、フェース面から見たシャフト軸中心線
からヘッド重心までの距離である重心距離３５mm、クラ
ウン部から見たリーディングエッジから重心までの距離
である重心深度３５mm、およびヘッド重心からフェース
面におろした垂線の足の地面からの高さであるスイート
スポット高さ２８mmのウッド型ゴルフクラブヘッドを試
作した。またヘッドは、ヘッド本体をＴｉ−６Ａｌ−４
Ｖで鋳造するとともに、フェース部材にはＴｉ−１５Ｖ
−３Ｃｒ−３Ａｌ−３Ｓｎのプレス成形材を用い、両部
材を溶接により一体化した。[Examples] As target values, a head mass of 185 g, a head volume of 360 cm 3 , a center of gravity distance of 35 mm, which is the distance from the shaft axis center line viewed from the face surface to the head center of gravity, and a distance from the leading edge to the center of gravity viewed from the crown portion. A wood type golf club head having a depth of center of gravity of 35 mm and a sweet spot height of 28 mm, which is the height of the foot perpendicular to the face from the center of gravity of the head from the ground, was prototyped. The head is made of Ti-6Al-4.
V-cast and Ti-15V for face member
A press-molded material of -3Cr-3Al-3Sn was used, and both members were integrated by welding.

【００３３】実施例１は図３に示す構造、実施例２は図
６に示す構造とし、いずれもヘッド本体の消失模型を、
シャフト差込用の筒部模型と殻基体模型とを別体で射出
成形した後、両者をハンダごてで溶着することにより一
体に形成した。なお実施例２の連結片の形状は幅３mm、
軸方向の長さ２５mmとした。そして、この消失模型から
セラミックス製の鋳型を製造して、ヘッド本体を鋳造し
た。Example 1 has the structure shown in FIG. 3 and Example 2 has the structure shown in FIG.
The cylinder model for inserting the shaft and the shell substrate model were separately injection-molded, and then both were welded with a soldering iron to integrally form them. The shape of the connecting piece in Example 2 was 3 mm in width,
The axial length was 25 mm. Then, a ceramic mold was manufactured from this disappearance model to cast the head body.

【００３４】一方、比較例１、２は、ヘッド本体の消失
模型を、殻基体と筒部模型とを同時にかつ一体的に成形
したもので、ヘッドの構成は図１６に示すものである。
鋳型は、実施例と同様にセラミックス製のものとした。
なお比較例１では、重心位置を優先して目標値に合わせ
るとともに、比較例２では、ヘッド体積を優先して目標
値に合わせた。評価項目は、次の通りである。On the other hand, in Comparative Examples 1 and 2, the vanishing model of the head main body is formed by molding the shell base and the tubular part model simultaneously and integrally, and the structure of the head is shown in FIG.
The mold was made of ceramics as in the example.
In Comparative Example 1, the barycentric position was prioritized to match the target value, and in Comparative Example 2, the head volume was prioritized to match the target value. The evaluation items are as follows.

【００３５】＜設計自由度＞ 実施例、比較例の各ヘッドの諸寸法を測定し、目標値に
対する実測値の値を調べた。目標値に近いほど、設計自
由度が高いと評価する。<Degree of Design> The dimensions of the heads of the examples and comparative examples were measured, and the measured values for the target values were examined. The closer to the target value, the higher the degree of freedom in design.

【００３６】＜耐久性試験＞ 各供試ヘッドにシャフトを装着してスイングロボットに
取り付けるとともに、ヘッドスピード５０ｍ／ｓでゴル
フボールを３０００発づつ試打し、打球後のフェース面
の変形ないし損傷状態を調べた。<Durability Test> A shaft is attached to each of the test heads and attached to a swing robot, and 3000 golf balls are struck at a head speed of 50 m / s, and the face surface is deformed or damaged after hitting. Examined.

【００３７】＜ヘッド角度のバラツキ＞ 実施例、比較例とも各１０個づつヘッドを製造し、リア
ルロフト角（目標９゜）、ライ角（目標５６゜）、フッ
ク角（目標１．０゜）の平均値を求めた。なおいずれも
鋳造直後のアズキャスト状態で、ネック部に力を加え、
設計値通りとなるように角度調整を行った。各角度が目
標値に近いほど良好である。<Variation of Head Angle> Ten heads were manufactured for each of the examples and comparative examples, and the real loft angle (target 9 °), lie angle (target 56 °), hook angle (target 1.0 °). Was calculated. In each case, in the as cast state immediately after casting, apply force to the neck part,
The angle was adjusted so that it was as designed. The closer each angle is to the target value, the better.

【００３８】テストの結果を表１に示す。The results of the tests are shown in Table 1.

【００３９】[0039]

【表１】 [Table 1]

【００４０】テストの結果、実施例１のものは、殻基体
と筒部との離間部の長さが大であるため、目標値通りの
ヘッドを製造でき、耐久性の面でも十分に満足のゆく結
果が得られた。また実施例２のものでは、離間部の長さ
が実施例１に比べると小さいため、重心距離、重心深度
は目標値よりもやや短くなったが、十分に実用レベルで
ある。なお実施例２では、ヘッド体積を優先して目標値
に近づけたため、フェース部の厚さが小となり、耐久試
験ではフェース面にやや凹みが見られたが十分に実用レ
ベルといえる。また実施例のものは、ヘッドのバラツキ
が小さいことが判る。As a result of the test, in Example 1, since the length of the space between the shell substrate and the cylindrical portion is large, it is possible to manufacture a head according to the target value and it is also sufficiently satisfactory in terms of durability. The results were finally obtained. In the second embodiment, the distance between the center of gravity and the depth of the center of gravity is slightly shorter than the target value because the length of the separated portion is smaller than that in the first embodiment, but it is at a practical level. In Example 2, since the head volume was prioritized to approach the target value, the thickness of the face portion was small, and a slight dent was seen on the face surface in the durability test, but it can be said to be a sufficiently practical level. Further, it can be seen that the heads of the examples have small variations.

【００４１】他方、比較例１は、離間部が無くこの部分
に多くの重量が配分されているため、限られたヘッド質
量の中で重心位置を優先するときには、ヘッド体積を小
さくせざるを得ないことが判る。なお本来ならヒール側
の重量が大かつヘッド全体が小さくなるため重心距離が
短くなるが、この例ではトウ側の各部の厚さを大として
重心位置を目標値に合わせた。このように、ヘッド質量
に制限を設けかつ重心位置を優先すると、ヘッド体積が
犠牲となる。On the other hand, in Comparative Example 1, since there is no separation part and a large amount of weight is distributed to this part, when prioritizing the position of the center of gravity within the limited head mass, the head volume must be reduced. I know there isn't. Originally, since the weight on the heel side is large and the entire head is small, the center-of-gravity distance is short, but in this example, the thickness of each part on the toe side is made large and the center-of-gravity position is adjusted to the target value. Thus, if the head mass is limited and the position of the center of gravity is prioritized, the head volume is sacrificed.

【００４２】また比較例２も、離間部が無くこの部分に
多くの重量が配分されているため、限られたヘッド質量
の中でヘッド体積を優先するときには、重心位置、重心
深度が小さくならざるを得ないことが判る。またヘッド
体積を目標値に合わせるために、やや重くなりしかも各
部が薄肉となり、耐久性試験で良くない結果となった。
このように、ヘッド質量に制限を設けかつヘッド体積を
優先すると、重心距離などが犠牲となる。さらに比較例
１、２では、ヘッドのバラツキが大きいことも判るIn Comparative Example 2 as well, since there is no separating portion and a large amount of weight is distributed to this portion, when the head volume is prioritized within a limited head mass, the position of the center of gravity and the depth of the center of gravity must be small. It turns out that you don't get. Further, in order to match the head volume to the target value, the head volume was slightly heavier and each part was thin, resulting in poor results in durability tests.
As described above, when the head mass is limited and the head volume is prioritized, the distance of the center of gravity is sacrificed. Further, in Comparative Examples 1 and 2, it can be seen that the variation of the head is large.

【００４３】[0043]

【発明の効果】上述したように、請求項１記載の発明で
は、ゴルフクラブヘッドを構成する少なくとも一つのヘ
ッド用部材を鋳造により製造するゴルフクラブヘッドの
製造方法であって、鋳型を製造する際に用いる消失模型
を、第１の型により製造された第１の消失模型と、この
第１の消失模型とは別の第２の型により製造された第２
の消失模型とを固着して製造するときには、中子が抜け
ないような内部構造を有する部材であっても２以上に分
けて成形しこれを固着することで複雑な消失模型を形成
でき、ひいては鋳造成形を可能としうる。 As described above, according to the invention of claim 1,
Is at least one of the golf club heads
Of golf club heads that are manufactured by casting
A manufacturing method, wherein an extinction model used when manufacturing a mold
And the first vanishing model produced by the first mold
A second die manufactured by a second mold different from the first vanishing model
The core is removed when manufacturing with the disappearance model of
Even if the member has an internal structure that does not
Forming a complex vanishing model by molding and fixing it
It can be made possible, and by extension, can be cast-molded .

【００４４】また請求項１記載の発明おいて、前記鋳造
工程は、鋳型の製造に際して、前記殻基体模型と前記筒
部模型とに、円柱状の鋳型材を挿入し固定しているの
で、殻基体模型と前記筒部模型との角度のバラツキを減
じることができるから、精度の高い消失模型を製造で
き、ひいてはバラツキの少ないヘッドの製造にも役立
つ。 [0044] or keep the first aspect of the present invention, the casting process, in the production of molds, the tube and the shell base model type
A cylindrical mold material is inserted and fixed in the model
Reduce the variation in the angle between the shell base model and the cylinder model.
Since it can be edited, it is possible to manufacture a highly accurate disappearance model.
It also helps to manufacture heads with less variation.
One.

【００４５】さらに請求項２，３に係る発明において、
前記第１の消失模型が、ヒール寄りに孔部を有するクラ
ウン側の壁部、ソール側の壁部、及び前記クラウン側の
壁部と前記ソール側の壁部との間を継いでヒール側から
トウ側に至るサイド側の壁部からなる殻基体模型であ
り、かつ前記第２の消失模型が、前記殻基体模型の前記
孔部に接続され請求項１の構成と相俟って設計自由度の
高いヘッドを製造することができる。Further, in the inventions according to claims 2 and 3,
From the heel side, the first vanishing model connects the crown side wall portion having a hole portion near the heel, the sole side wall portion, and the crown side wall portion and the sole side wall portion. The degree of freedom of design in combination with the configuration of claim 1, which is a shell base model including side walls extending to the toe side, and the second vanishing model is connected to the hole of the shell base model. It is possible to manufacture a high head.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明により製造しうるゴルフクラブヘッドを
例示する正面図である。FIG. 1 shows a golf club head that can be manufactured according to the present invention .
It is a front view which illustrates .

【図２】その平面図である。FIG. 2 is a plan view thereof.

【図３】図２のＡ−Ａ線端面図である。FIG. 3 is an end view taken along the line AA of FIG.

【図４】本実施形態のゴルフクラブヘッドの分解斜視図
である。FIG. 4 is an exploded perspective view of the golf club head of the present embodiment.

【図５】図１のＢ−Ｂ線端面図である。5 is an end view taken along line BB of FIG.

【図６】本発明により製造しうる他のゴルフクラブヘッ
ドを例示する正面図である。FIG. 6 is another golf club head that may be manufactured in accordance with the present invention .
It is a front view which illustrates a code .

【図７】そのＣ−Ｃ線端面図である。FIG. 7 is an end view of the CC line.

【図８】本発明の製造方法における消失模型の一例を示
す斜視図である。FIG. 8 is a perspective view showing an example of a disappearance model in the manufacturing method of the present invention .

【図９】（ａ）〜（ｃ）は、消失模型を作成する手順の
一例を示す断面図である。9A to 9C are cross-sectional views showing an example of a procedure for creating a vanishing model.

【図１０】殻基体と筒部との固着部を拡大した部分断面
図である。FIG. 10 is an enlarged partial cross-sectional view of a fixed portion between a shell substrate and a cylindrical portion.

【図１１】本発明の製造方法に用いる鋳型の一例を説明
する断面図である。FIG. 11 is a cross-sectional view illustrating an example of a mold used in the manufacturing method of the present invention.

【図１２】従来の消失模型の一例を示す斜視図である。FIG. 12 is a perspective view showing an example of a conventional disappearance model.

【図１３】従来の消失模型の成形装置である。FIG. 13 shows a conventional disappearance model forming device.

【図１４】そのＥ−Ｅ断面図である。FIG. 14 is a sectional view taken along line EE.

【図１５】他の成形装置の断面図である。FIG. 15 is a cross-sectional view of another molding apparatus.

【図１６】比較例のヘッドの断面図である。FIG. 16 is a sectional view of a head of a comparative example.

【符号の説明】[Explanation of symbols]

１ ゴルフクラブヘッド １ａ フェース部材 １ｂ ヘッド本体 ２ フェース部 ３ クラウン部 ４ ソール部 ５ サイド部 ６ ネック部 ７ クラウン側の壁部 ９ ソール側の壁部 １０ サイド側の壁部 １１ 殻基体 １２ 筒部 Ｍ 消失模型 Ｍ１ 第１の消失模型 Ｍ２ 第２の消失模型 1 golf club head 1a Face member 1b head body 2 face part 3 Crown 4 sole part 5 side parts 6 neck 7 Crown side wall 9 Sole side wall 10 Side wall 11 shell substrate 12 Tube M disappearance model M1 first disappearance model M2 second vanishing model

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) A63B 53/00 B22C 9/00 ─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. 7 , DB name) A63B 53/00 B22C 9/00

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】ゴルフクラブヘッドを構成する少なくとも
一つのヘッド用部材を鋳造により製造するゴルフクラブ
ヘッドの製造方法であって、 前記ヘッド用部材と同形状の消失模型を製造する消失模
型製造工程と、 この消失模型から鋳型を製造して前記ヘッド用部材を鋳
造する鋳造工程とを含むとともに、 前記消失模型製造工程は、前記消失模型が、第１の型に
より製造された第１の消失模型と、この第１の消失模型
とは別の第２の型により製造された第２の消失模型とを
固着する工程を含み、 前記第１の消失模型が、孔部を有する殻基体模型であ
り、 前記第２の消失模型が、前記殻基体模型の前記孔部に接
続され殻基体模型の内部を殻基体模型の内面と離れての
びる筒部模型であり、 前記鋳造工程は、鋳型の製造に際して、前記殻基体模型
の前記孔部と前記筒部模型とに、円柱状かつ両模型の位
置ずれ防止用の鋳型材を挿入して固定する ことを特徴と
するゴルフクラブヘッドの製造方法。1. A method for manufacturing a golf club head, comprising manufacturing at least one head member constituting a golf club head by casting, the method comprising: manufacturing a vanishing model for manufacturing a vanishing model having the same shape as the head member. And a casting step of casting a head member by manufacturing a mold from the vanishing model, wherein the vanishing model manufacturing step comprises the first vanishing model produced by the first die. And a step of fixing a second vanishing model manufactured by a second mold different from the first vanishing model , wherein the first vanishing model is a shell substrate model having holes.
Ri, the second fugitive pattern is tangent to the hole of the shell base model
The inside of the shell-based model away from the inner surface of the shell-based model.
In the casting process, the shell base model is used for manufacturing a mold.
The hole and the cylinder model of the
A method for manufacturing a golf club head, comprising inserting and fixing a mold material for preventing misalignment . 【請求項２】前記第１の消失模型が、ヒール寄りに孔部
を有するクラウン側の壁部、ソール側の壁部、及び前記
クラウン側の壁部と前記ソール側の壁部との間を継いで
ヒール側からトウ側に至るサイド側の壁部からなる殻基
体模型であることを特徴とする請求項１記載のゴルフク
ラブヘッドの製造方法。2. The first vanishing model has a hole near the heel.
A crown side wall portion having a sole side wall portion, and
Connect between the wall on the crown side and the wall on the sole side
Shell base consisting of side walls from heel side to toe side
The golf club head manufacturing method according to claim 1, wherein the golf club head is a body model . 【請求項３】前記第２の消失模型が、前記殻基体模型の
前記孔部に接続されかつシャフト差込用の筒部模型であ
ることを特徴とする請求項１又は２記載のゴルフクラブ
ヘッドの製造方法。3. The second disappearance model of the shell substrate model
A cylindrical model connected to the hole and used for inserting the shaft.
The method for manufacturing a golf club head according to claim 1 or 2, wherein
JP2001261989A 2001-08-30 2001-08-30 Manufacturing method of golf club head Expired - Fee Related JP3523622B2 (en)

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US10/222,920 US6789304B2 (en) 2001-08-30 2002-08-19 Golf clubhead and method of manufacturing the same
US10/899,174 US6997818B2 (en) 2001-08-30 2004-07-27 Golf clubhead and method of manufacturing the same

Applications Claiming Priority (1)

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US6789304B2 (en) 2004-09-14
JP2003070939A (en) 2003-03-11
US20030050133A1 (en) 2003-03-13
US20040266552A1 (en) 2004-12-30
US6997818B2 (en) 2006-02-14

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